(;GM[1]FF[4]SZ[19]
GN[The other route fails because of a and b c d]
PC[http://senseis.xmp.net/?ReadingProblem1/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?ReadingProblem1/Solution

The other route fails because of a and b c d]
PL[B]

AB[il][pl][gm][im][dn][in][do][go][jo][lo][ro][dp][jp][lp][mp][pp][eq][nq][oq][pq][mr]
AW[ik][jk][dl][fl][gl][hl][ol][em][jm][lm][nm][pm][qm][en][eo][mo][fp][hp][ip][np][op][fq][jq][lq][mq][ir][nr]
CR[mo]
LB[mn:b][rn:d][no:c][pr:a]

;B[nn]C[B1]MN[1]
;W[oo]C[W2]MN[2]
;B[on]C[B3]MN[3]
;W[po]C[W4]MN[4]
;B[pn]C[B5]MN[5]
;W[qo]C[W6]MN[6]
;B[qn]C[B7]MN[7]
;W[qp]C[W8]MN[8]
;B[rp]C[B9]MN[9]
;W[qq]C[W10]MN[10]

;CR[mo]
LB[mn:b][rn:d][no:c][pr:a]
)
